hg: jdk7/hotspot-gc/hotspot: 7014679: G1: deadlock during concurrent cleanup

[tony.printezis at oracle.com]

Changeset: b7a938236e43
Author:    tonyp
Date:      2011-01-31 16:28 -0500
URL:       http://hg.openjdk.java.net/jdk7/hotspot-gc/hotspot/rev/b7a938236e43

7014679: G1: deadlock during concurrent cleanup
Summary: There's a potential deadlock between the concurrent cleanup thread and the GC workers that are trying to allocate and waiting for more free regions to be made available.
Reviewed-by: iveresov, jcoomes

! src/share/vm/gc_implementation/g1/concurrentMarkThread.cpp